Messages in this thread | | | From | Ilias Apalodimas <> | Date | Wed, 16 Aug 2023 14:58:48 +0300 | Subject | Re: [PATCH v8 0/5] introduce tee-based EFI Runtime Variable Service |
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On Tue, 15 Aug 2023 at 05:41, Masahisa Kojima <masahisa.kojima@linaro.org> wrote: > > Hi Jan, > > 2023年8月15日(火) 2:23 Jan Kiszka <jan.kiszka@siemens.com>: >> >> On 14.08.23 11:24, Ilias Apalodimas wrote: >> > Hi Jan, >> > >> > On Mon, 7 Aug 2023 at 05:53, Masahisa Kojima <masahisa.kojima@linaro.org> wrote: >> >> >> >> This series introduces the tee based EFI Runtime Variable Service. >> >> >> >> The eMMC device is typically owned by the non-secure world(linux in >> >> this case). There is an existing solution utilizing eMMC RPMB partition >> >> for EFI Variables, it is implemented by interacting with >> >> OP-TEE, StandaloneMM(as EFI Variable Service Pseudo TA), eMMC driver >> >> and tee-supplicant. The last piece is the tee-based variable access >> >> driver to interact with OP-TEE and StandaloneMM. >> >> >> >> Changelog: >> >> v7 -> v8 >> >> Only patch #3 "efi: Add tee-based EFI variable driver" is updated. >> >> - fix typos >> >> - refactor error handling, direct return if applicable >> >> - use devm_add_action_or_reset() for closing of tee context/session >> >> - remove obvious comment >> > >> > Any chance you can run this and see if it solves your issues? >> > >> >> I also need [1], and I still need a cleanup script before terminating >> the tee-supplicant, right? > > > Yes, we need patch[1] and a cleanup script. > Sorry, I should note in the cover letter. > >> And if need some service in the initrd >> already, I still need to start the supplicant there and transfer its >> ownership to systemd later on? > > Yes. > >> These patches here only make life easier >> if the supplicant is started by systemd, after efivarfs has been >> mounted, correct?
Not systemd specifically. Any tool that can signal <dev>/driver/unbind would work. Sumit is just reusing the default unbind notification mechanism
Thanks /Ilias
> > Yes. > > Thanks, > Masahisa Kojima > >> >> >> Jan >> >> [1] https://lkml.org/lkml/2023/7/28/853 >> >> -- >> Siemens AG, Technology >> Linux Expert Center >>
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